Development and evaluation of a dynamic bluetooth network formation procedure
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Development and Evaluation of a Dynamic Bluetooth Network Formation Procedure. Budapest University of Technology and Economics. Márk Félegyházi graduated student. Overview. Bluetooth wireless technology Network formation in Bluetooth Suggested methods two methods for network building

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Development and Evaluation of a Dynamic Bluetooth Network Formation Procedure

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Development and evaluation of a dynamic bluetooth network formation procedure

Development and Evaluation of a Dynamic Bluetooth Network Formation Procedure

Budapest University of Technology and Economics

Márk Félegyházigraduated student


Overview

Overview

  • Bluetooth wireless technology

  • Network formation in Bluetooth

  • Suggested methods

    • two methods for network building

    • network topology optimization

  • Simulation results

  • Conclusion


Bluetooth wireless technology 1

Bluetooth wireless technology (1)

Internet

  • short-range radio technology

  • cable replacement

  • universal interface


Bluetooth wireless technology 2

Bluetooth wireless technology (2)

master

  • master-slave relationship between nodes

  • Frequency Hopping (FH)

  • Time Division Duplex (TDD) communication

slave


Bluetooth network

Bluetooth network

piconet

scatternet


Bluetooth scatternet formation

A

B

Bluetooth scatternet formation


Problem formulation

Problem formulation

  • Connection setup phase

    • neighbour discovery

    • physical connection setup

  • Scatternet building and maintenance

  • Scatternet optimization


Alive broadcasting scatternet building method absb

C

C

D

D

C

D

B

B

E

E

B

E

F

F

A

A

F

A

connection

breakdown

Fully-connected

network

sending Alive

messages (limit=3)

Alive Broadcasting Scatternet Building method (ABSB)


Routing based scatternet building method rbsb

C

D

E

B

A

F

Routing Based Scatternet Building method (RBSB)


Traffic dependent scatternet optimization tdso

C

C

B

B

A

A

C

C

B

A

B

A

Traffic Dependent Scatternet Optimization (TDSO)

master-slave

switch

simple piconet

connection

teardown

connection

setup


Ad hoc module in plasma

Ad hoc module in PLASMA


Dynamic scatternet formation with the absb method

Dynamic scatternet formation with the ABSB method

throughput (kbit/s)

(b)

(a)

(d)

(c)

(f)

(e)

time (s)


Simulation results of the scatternet optimization

Simulation results of the scatternet optimization

throughput [bit/s]

throughput [bit/s]

time [s]

time [s]

Texecution = 1 s

Texecution = 4 s


Conclusion

Conclusion

  • Bluetooth Scatternet Building

    • two methods (ABSB and RBSB)

    • simple methods

    • distributed algorithms

    • periodic messaging (robust against packet loss)

  • Bluetooth Scatternet Optimization (TDSO)

    • distributed algorithm

    • decisions according to local measured traffic

  • Simulation results

    • scatternet building

      • fully-connected network building and maintenance

    • scatternet optimization

      • increases network capacity by reconfiguring the topology


Future work

Future work

  • Implementation of the routing based scatternet building method

  • Performance evaluation of the alive based scatternet building method

  • Measurements with the tuning of the parameters in the scatternet optimization method

  • Test both scatternet building and optimization procedure together


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